Optimising grain yield of thirty-two wheat varieties across sowing dates – Condobolin 2016

Abstract

Key findings •• Scepter[PBR] (6.17 t/ha) yielded the highest from the 20 April sowing date; Cutlass[PBR] (4.38 t/ha) yielded the highest from the 19 May sowing date; and Viking[PBR] (3.22 t/ha) yielded the highest from the 1 June sowing date. •• The 20 April sowing germinated and established well before the waterlogged conditions occurred during late May and early June causing reduced germination and poorer establishment for the 19 May and 1 June sowing dates (SD). This low establishment resulted in reduced yields between sowing dates of 0.78 t/ha from SD1 and SD2 and 1.01 t/ha from SD2 and SD3. •• Grain yields of varieties were highest when they were sown in their recommended sowing window.